Polygonal indexable cutting insert



FIG. 1 is a perspective view of a polygonal indexable cutting insert showing a first form of our new design;

FIG. 2 is a top plan view of the insert of FIG. 1;

FIG. 3 is a perspective view of a polygonal indexable cutting insert showing a second form of our new design; and,

FIG. 4 is a top plan view of the insert of FIG. 3. 

The ornamental design for a polygonal indexable cutting insert, as shown. 